Hi everyone

My 110 td5 is leaking coolant (I think from the radiator at the moment) but it only leaks when the engine has been running.

I picked it up from a Land Rover specialist mechanic who changed the expansion tank cap due to the spring being weak (I believe it's the original from 2002). Before I drove it home, I checked the tank and it was at the fill line. I drove 27km home and checked the engine, and found droplets at the bottom corner of the radiator, on the passenger side.

Before I get it looked at professionally, is this a sign of needing a new radiator, or something more sinister? I had a new head gasket 16 months ago, so I'm hoping it's not that again.

I've not noticed any white smoke from the exhaust, and there was no signs of water contamination in the oil before it got serviced.

Thanks in advance